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首页> 外文期刊>Poultry Science >Starch digestibility and apparent metabolizable energy of western Canadian wheat market classes in broiler chickens
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Starch digestibility and apparent metabolizable energy of western Canadian wheat market classes in broiler chickens

机译：肉鸡鸡西加拿大小麦市场课程的淀粉消化率和表观代谢能量

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Wheat is the primary grain fed to poultry in western Canada, but its nutritional quality, including the nature of its starch digestibility, may be affected by wheat market class. The objectives of this study were to determine the rate and extent of starch digestibility of wheat market classes in broiler chickens, and to determine the relationship between starch digestibility and wheat apparent metabolizable energy (AME). In vitro starch digestion was assessed using gastric and small intestinal phases mimicking the chicken digestive tract, while in vivo evaluation used 468 male broiler chickens randomly assigned to dietary treatments from 0 to 21 d of age. The study evaluated 2 wheat cultivars from each of 6 western Canadian wheat classes: Canadian Prairie Spring (CPS), Canadian Western Amber Durum (CWAD), CW General Purpose (CWGP), CW Hard White Spring (CWHWS), CW Red Spring (CWRS), and CW Soft White Spring (CWSWS). All samples were analyzed for relevant grain characteristics. Data were analyzed as a randomized complete block design and cultivars were nested within market class. Pearson correlation was used to determine relationships between measured characteristics. Significance level was P &= 0.05. The starch digestibility range and wheat class rankings were: proximal jejunum - 23.7 to 50.6% (CWHWSc, CPSbc, CWSWSbc, CWRSab, CWGP(a), CWAD(a)); distal jejunum - 63.5 to 76.4% (CWHWSc, CPSbc, CWSWSbc, CWRSab, CWGP(a), CWAD(a)); proximal ileum - 88.7 to 96.9% (CWSWSc, CPSbc, CWHWSbc, CWRSb, CWGP(b), CWAD(a)); distal ileum - 94.4 to 98.5% (CWSWSb, CWHWSb, CPSb, CWRSab, CWGP(a)(b), CWAD(a)); excreta - 98.4 to 99.3% (CPSb, CWRSb, CWHWSb, CWSWSab, CWGP(ab), CWAD(a)). Wheat class affected wheat AME(n) with levels ranging from 3,203 to 3,411 kcal/kg at 90% DM (CWRSc, CWSWSc, CPSb, CWGP(b), CWAD(a), CWHWSa). Significant and moderately strong positive correlations were observed between in vitro and in vivo starch digestibility, but no correlations were found between AME and starch digestibility. In conclusion, rate and extent of starch digestibility and AME were affected by western Canadian wheat class, but starch digestibility did not predict AME.
机译：小麦是加拿大西部家禽的原发性谷物，但其营养质量，包括其淀粉消化率的性质，可能受到小麦市场阶级的影响。本研究的目的是确定肉鸡鸡麦市场课程淀粉消化率的速度和程度，并确定淀粉消化率与小麦表观代谢能量（AME）之间的关系。在体外淀粉消化使用胃和小肠阶段评估模仿鸡消化道，而在体内评估中使用468只雄性肉鸡鸡，随机分配到0至21d时的饮食治疗。该研究评估了来自6个加拿大小麦班级的每种小麦品种：加拿大草原春季（CPS），加拿大西部琥珀色杜姆姆（CWAD），CW通用（CWGP），CW硬白色弹簧（CWHWS），CW红弹簧（CWR ）和CW软白色弹簧（CWSW）。分析所有样品以进行相关晶粒特征。分析数据作为随机完整块设计，品种嵌套在市场课程中。 Pearson相关性用于确定测量特征之间的关系。显着性水平是p＆amp; = 0.05。淀粉消化率范围和小麦级别排名是：近端Jejunum - 23.7至50.6％（CWHWSC，CPSBC，CWSWSBC，CWARB，CWGP（A），CWAD（A））;远端Jejunum - 63.5至76.4％（CWHWSC，CPSBC，CWSWSBC，CWARSAB，CWGP（A），CWAD（A））;近端回肠 - 88.7至96.9％（CWSWSC，CPSBC，CWHWSBC，CWRSB，CWGP（B），CWAD（A））;远端回肠 - 94.4至98.5％（CWSWSB，CWHWSB，CPSB，CWRSAB，CWGP（A）（B），CWAD（A））; EXCRETA - 98.4至99.3％（CPSB，CWRSB，CWHWSB，CWSWSAB，CWGP（AB），CWAD（A））。小麦类影响小麦ame（n），水平范围为3,203至3,411 kcal / kg，在90％dm（cwrsc，cwswsc，cpsb，cwgp（b），cwad（a），cwhwsa）。体外和体内淀粉消化率之间观察到显着且中度强的正相关性，但在AME和淀粉消化率之间没有发现相关性。总之，淀粉消化率和AME的速率和程度受到西加拿大小麦类的影响，但淀粉消化率没有预测ame。

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